13 Mar
2025
13 Mar
'25
8 p.m.
On Thu, Mar 13, 2025, 12:37 PM Mike Stein via cctalk <cctalk(a)classiccmp.org
wrote:
ISTR that some time ago I read mention here about an
EPROM fast enough to
approach PROM speeds; anyone share that recollection, or even have a
source/part no.?
How big and how fast? Cypress made some 15ns UV eraseable parts, for
example CY7C245A-15WC
http://www.bitsavers.org/components/cypress/_dataBooks/1995_Cypress_High-Pe…
Chapter 4
I have some CY7C291A-35WC parts I bought to upgrade the microcode of an HP
1000 A900 12201-60001 Sequencer Card. (Haven't gotten around to doing that
yet).